Dinosaur National Monument

A faux Stegosaurus on display outside the Visitor Center. President Woodrow Wilson proclaimed the dinosaur beds as Dinosaur National Monument in 1915. The monument boundaries were expanded in 1938 from the original 80-acre tract surrounding the dinosaur quarry in Utah, to its present extent of over 200,000 acres in Utah and Colorado, encompassing the spectacular river canyons of the Green and Yampa.
Though lesser-known than the fossil beds, the petroglyphs in Dinosaur National Monument are another treasure the monument holds. Due to problems with vandals, many of the sites are not listed on area maps.[citation